I would give this charger five stars except for the fact that it does not include an adapter for a micro USB.
Many more items are using micro USB chargers, and finding a micro USB adapter was more of a challenge than I thought it should have been.
Otherwise, after I actually found a micro adapter, the Solio worked pretty well--in sunlight. I was able to use it to charge my cell phone, my bluetooth earpiece, and best of all, my Kindle.
I'm planning to get another Solio, and I'm going to order some additional plug adapters.
Keep in mind most solar panels need to be angled at the sun. When you properly aim this it charges well. I will be ordering a second one to take on my expedition in Costa Rica.
Con: It advertises charging Ipods, but does not come with an Ipod adapter. You have to buy that separately some place else.
It is exceptionally good in small spaces and great for beach and sunny days, it can charge iPods, cell phones, and anything that plugs into a car lighter. Amazing well worth the price.